CHINT NQ2 Series User Instruction page 3

NQ2 Series Electromagnetic Starter
Main Use Purpose and Application Scope
1
NQ2 series electromagnetic starter (hereinafter referred to as starter) is mainly used in electric circuits
with AC frequency of 50Hz (or 60Hz), rated operating voltage up to 660V and rated operating current up to
68A for controlling the direct start and stop of electric motor. Starter with thermal overload relay
(hereinafter referred to as thermal relay) can be used to protect the overload and phase loss of electric
motor.
2 Key Technical Parameters
Ambient temperature (℃)
Hot and humid atmospheric conditions
Altitude
Pollution class/installation category
Conventional
free air
thermal
Model
current of
shell frame,
Ith (A)
NQ2-15□/1
13
NQ2-15□/2 18
NQ2-15□/3 25
NQ2-15□/4 36
Table 1 Ambient Conditions
-5℃~+40℃, average temp. not exceeding +35℃ within 24h
+40℃, RH not exceeding 50% and may reach 90% at +20℃
No influence below 2,000m
Class 3/Ⅲ
Table 2 Key Technical Parameters of Starter (I)
Rated
Rated power control of
operating
shell frame, Pe (kW)
current
of shell
AC-3
frame,
Ie (A) 660V 380V
7.5 5.5
12
18 10 7.5
25 15 11
32 18.5 15
AC
Thermal
contactor relay
model model
assembed assembled
220V
3 NC1-12
NR2-25
4 NC1-18
5.5 NC1-25
7.5 NC1-32 NR2-36
01
Setting
Button
current
type of
range of
starter
thermal
with
relay (A)
button
0.1~0.16
0.16~0.25
0.25~0.4
0.4~0.63
0.63~1
1~1.6
1.25~2
NP2-EA31
1.6~2.5
(start)
2.5~4
NP2-EA42
4~6
(stop)
5.5~8
7~10
9~13
12~18
17~25
23~32
28~36